Self-heating soldering-iron.



L ERLBR. SELF HEATING SOLDERIN G IRON. APPLICATION FILED 00T. 19,1909.

' Patented Aug. 2, 1910.

@ww/Moz Karl Mm @mmv/m0 www@ Summe/13 scarsa,

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naar. nanna, or easier., SWITZERLAND.

SELF-HEATING SGLDERINGJRON.

Specification of Letters Patent. lpatented Aug 2, 1910- pploation filed October 19, 1909. Serial No. 523,515.

To all 'whom it 'muy concern:

Be it known that KARL ERLER, a citizen.

of' Switzerland, residing at Basel, in the Canton of Basel and Republic of Switzerland, have invented certain new and useful Improvements in Self-Heating Solderingirons, of which the following is a specificaone end with a reduced neck portion A', and

tion.

My invention relates to liquid fuel vaporizers and burners and more particularly to burners of this character adapted especially for use in connection with self heating soldering irons and the like.

The object of the invention is to provide a device of this character which' shall be efficient in use and the parts of which can be readily disassembled for the purpose of cleaning or repairing.

lilith the above and other objects in view the invention consists in the construction and arrangement of parts hereinafter described, an illustrated in the accompanying drawings, in which,

Figure 1 is a longitudinal section of lself heating soldering iron embodying m invention; Fig. 2 is a similar view, on an enlarged scale, of the burner and associated parte, the section being taken on the line 2-2 of Fig. 3; and Fig. 3 .is a section through the burner substantially on the line 3-3 of Fig. 2, looking in the direction of the arrow.

Referring to the drawings, which are to be taken as illustrative only, A designates the handle of the device, which is preferably cylindrical, and which constitutes the fuel reservoir, The'reservoir A is provided at at the other end with a cap-B, having a screw plug B", through which fuel may be fed into the reservoir.

Secured to the cap B is a pump cylinder 1, in which works a piston having an operating handle 2 projecting through a stuiiing box 8, carfr'ied by the cap B. From the inner end of ,the pump cylinder 1 extends a pipe 4 to a heck valve 5 which controls communica tio between the pipe and the interior of the reservoir.

Secured to the inner end of the pump cylinder 1 is a guide piece 6, .extending centrally through which is a valve rod 7. This valve rod7 carries at its inner end a clutch head 8, adapted to be enga ed by the piston of the pump so that t e rod may be turned andthus adjusted. In this way the other end 9 of the rod 7, which is conical in sh-ape, may be thrust more or less into the openingll formed in the casting A', and thus .the passa e of the liquid through such opening may e regulated as desired. A wick A10 surrounds the rod 7f and extends up into the neck A. Y

12 designates ther base of the burner proper, such base being secured to the neck portion'A of the handle, as by means of screw threads. Screw threaded to the' outer end of this base 12 is a burner casing C, having a contracted mouth D, adapted to directthe flame against the soldering iron E, which is adjustably clamped in position as by means of a set screw 20. A port 13 is formed in the base 12, so as to register at one end with the opening 11, and into the other end of this port is set a small straight pipeli which'extends outwardly into the burner casing. Surrounding this pipe 14, and of somewhat greaterdiameter, is a tube 15, having one end set into the base 12 and having its other end closed as shown at 16. it will be seen therefore that an annular chamber is formed between the outside of pipe 14: and the inside of tube 15. Communicating with this chamber is a passage 17 formed inthe base 12 and extending to a burner tip 18,` which is centrally mounted in the base 12. The walls of-the casing C are preferably provided with a plurality' of slots or openings 19 through which the air necessary to support combustion may freely circulate. Y'

ln operation, when the handle 2 is actuated, compressed air is forced from the cylinder 1 through pipe 4, and valve 5, into the fuel reservoir A, thus subjecting the.

contained fuel to pressure. Under the iniuence of this pressure, therefore, the liquid passes along through the wick 10, opening 11, part 13- and into pipe 14. Issuing from the outer end of this pipe, it strikes against the closed end 16 of the tube 15, and,'thus forming a spray, travels back along the annular chamber between the tube and pipe, through passage 17, to burner 18 After the apparatus has been started, the heat from the flame issuing from burner 18 raises tube 1'5 to a high temperature, and as the fuel flows along the inside of this tube it is rapidly vaporized before it reaches the burner. f

It will be observed that the Aeasing C', or base 12, or both, my belreadily unscrewed and taken apart, as may also the burner 18 and the tube l5.

It will thus be seen that I have provided, in connection Wit-li a self-heating tool, a burner which admits of being easily and quickly cleaned, and which lends itself readily to practical requirements7 and it is thought that the numerous advantages of my invention will be readily appreciated by those skilled in the art.

l/Vhat I claim is l. In :i liquid fuel vaporizer and burner, the combination with a base, of a cylindrical casing removably secured thereto, a burner tip mounted on said base and centrally erranged Within said casing, a fuel feed pipe` aiso projecting from said base Within' the casing, said'pipe having an open end, and a t'ibe fitting over said pipe and having e closed outer end, seid tube being arranged Within said casing adjacent and et one side of said burner tip and being,- screwed into said buse around said pipe so as to provide an annular chamber between said tube and pipe, and said base havin Wholly Within itself a passage establishing direct communication between seid chamber and burner tip.

2. In a self heating tool, the combination of. a liquid fuel reservoir arranged to con stitute the handle or" the device, means for forcing the fuel from said reservoir under pressure', a burner comprising a casing hav ing a contracted mouth, means for supporting the tool to be heated adjacent but ont side of such mouth, a burner .ii disposed Within said casing, and a con nnous pas sage extending,r from said reeel to'said burner tip, such passage comprising; a pair of coneentrically 'arranged cond' te mounted Within said casing adjacent the burner tip, said conduits being .straight readily separable, and comprising between an annular clinnil-er through which the fuel adapted to dow,

'In testimony whereof l my signature, in presence of two Witnessesn KARL ERLER Witnesses GEORGE Grrronn,

f' ARNOLD nenn 

